malloc():内存损坏(快速)错误C++

Question

malloc():内存损坏(快速)错误C++

The*_*Boe 1 c++ malloc stack glibc capacity

我在C++工作.我正在研究一种方法来改变堆栈的最大容量,我对我得到的错误感到困惑.以下是我的方法.

void Stack::setCapacity(unsigned newCapacity){
if(newCapacity< this->getSize()){
    throw StackException("setCapacity()", 
    "the size is larger than the desired capacity");
} else {
    if(newCapacity != myCapacity){
        Item * tempArray = new Item[newCapacity];
        if(newCapacity < myCapacity){
            for(unsigned i=0; i<newCapacity;i++){
                tempArray[i] = myArray[i];
            }
        } else if (newCapacity > myCapacity) {
            for(unsigned i=0; i<myCapacity; i++){
                tempArray[i] = myArray[i];
            }
        }
        for(unsigned i=0; i<newCapacity; i++){
            myArray[i] = tempArray[i];
        }
        delete tempArray;
    }
    myCapacity = newCapacity;
} 
}

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我还编写了一个测试方法来测试我的setCapacity()方法是否有效.

void StackTester::setCapacityTest() {
cout << "- setCapacity... " << flush;

// empty stack
Stack st7(5);
assert(st7.getSize() == 0);
assert(st7.getCapacity() == 5);
st7.setCapacity(7);
assert(st7.getCapacity() == 7);
cout << " 1 " << flush;

// partially filled stack - larger capacity
Stack st8(5);
assert(st8.getCapacity() == 5);
st8.push(3);
st8.push(4);
st8.setCapacity(7);
assert(st8.getCapacity() == 7);
assert(st8.getTop() == 4);
st8.pop();
assert(st8.getTop() == 3);
cout << " 2 " << flush;

// size larger than new capacity
try{
Stack st9(3);
st9.push(7);
st9.push(4);
st9.push(11);
assert(st9.getSize() == 3);
st9.setCapacity(2);
cerr << "setCapacity's new capacity is larger than the size";
exit(1);
} catch(StackException& se){
    cout << " 3 " << flush;
}

// partially filled stack - smaller capacity
Stack st10(5);
assert(st10.getCapacity() == 5);
st10.push(1);
st10.setCapacity(2);
assert(st10.getCapacity() == 2);
assert(st10.getTop() == 1);
cout << " 4 " << flush;

// fully filled stack - larger capacity
Stack st11(2);
assert(st11.getCapacity() == 2);
st11.push(3);
st11.push(7);
assert(st11.getTop() == 7);
st11.setCapacity(3);
assert(st11.getCapacity() == 3);
cout << " 5 " << flush;

cout << " Passed!" << endl;
}

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当我通过评论其余部分单独运行测试的每个部分时,一切正常.测试的每个部分都通过了.但是,当我组合这些部分并尝试运行整个测试时,我收到以下错误:

*检测到glibc***/home /.../StackProject:malloc():内存损坏(快速):0x0000000001e86030*

使用调试器,我已经将问题缩小到在堆栈中创建myArray.例如,在我的测试中成功运行"1"后,在"2"中在st8(5)中创建myArray会导致程序崩溃.

我混淆的主要原因是每个部分单独通过,但它们没有集体通过.我不知道该怎么做.我的方法写错了吗？如果是这样,我该如何纠正呢？

谢谢.